Method used in the manufacture of paper and such like by machinery together with an apparatus for the purpose.



' I. H. WALLIN & K. GRANQVIST. METHOD USED IN THE MANUFACTURE OF PAPER AND SUCH LIKE BY MACHINERY TOGETHER WIT N APPARATUS THE POSE.

1,186,629. PatentedJuneBJQlG.

tube 1 to a vessel 2 which is provided with reference .ing. The apparatus JOHAN HUGO 'WALLTN AND KNUT GRA'NQVIST, 01E KUPMANHOLMEN, SWEDEN; SAID GRANQVIST ASSIGNOR T0 SAID WALLIN.

METHOD USED IN THE MANUFACTURE OF PAPER- AND SUCH LIKE BY MACHINERY TOGETHER niaaeee.

WITH AN APPARATUS Specification of Letters Patent.

FOR THE PURPOSE.

Patented June as, rare.

Application filed, November 14, 1913. Serial No. 800,998.

To all whom it may concern:

Be it known that we, J OHAN Hoco WALLIN and Know GRANQVIST, subjects of the King of Sweden, residing at'Kopmanholmen, Sweden, have invented new and useful Improvements in Methods Used in the Manufacture of Paper and Such like by Machinery Together with an Apparatus for the Purpose, of which the following is a specification.

The present invention refers to a method used in the manufacture of paper and the like by machinery, consisting in causing the water running from, or pressed out of, some part of the wet-portion of the machine to act upon a registering device for indicating the thickness of the pulp in the machine, or a regulating device for controlling the supply of pulp to the machine, or both.

The invention relates also to an apparatus for carrying out this method, and this apparatus is more closely described hereafter to the accompanying drawshown on the latter is, however, only by way of example and dia gram and may undergo many modifications,

as will be seen from the following description. From a certain part of the wet-portion of a drying and paper making machine, or similar contrivance which Wet-portion substantially consists in the dandy-roller, couch-roller, and first or second pressureroller, etc., cut preferably from the first felt-press, the water is run through a flexibllel wit an exhaust or outlet 3, preferably regulable. This latter should preferably be located near the bottom of the vessel. By making use of various sized nozzles the regulation of the outlet 3 is accomplished. The size of the outlet is determined according to the normal amount of Water, that is to discharge a volume of water equal to the normal volume discharged into the vessel 2 from the wet portion of the machine when the pulp ,web is of proper thickness and in such a manner that when the volume of water running into the vessel is greater than the volume discharged therefrom, the water is made to run more slowly from the vessel than into the same, by which means the vessel is made to contain an amount of water varying according to the thickness of. the pulp in the machine, and by means of these variations the beforementioned registering and regulating devices are operated. However, when the pulp web is too thin, a smaller volume of water than normal will run into the vessel 2, but when the pulp web is too thick a larger volume of water than normal will run into the vessel 2, but the time interval between which the flow is not normal is so slight by reason of being corrected in a manner hereinafter explained, that said vessel will never overflow or become empty during the ordinary operation of the machine. According to the drawing this is done by means of a float 4 fitted in the vessel 2. Instead of making use of a float, the vessel 2 may also be attached to a pair of scales or similar device, or the said vessel may be developed into such, when the vessel itself or the scales will operate the said registering and regulating dBV I CQS,

The float 4 is, as shown in the drawings, connected through the medium of a chain or rod 5 with an indicator 6 which follows the movements of the float and moves along a scale 7 upon which the thickness of the pulp in the machine may be indicated directly or indirectly. In the modification just mentioned, when no float is used, the vessel or scales are connected with the indicator 6 instead.

The vessel 2 is shown divided by means of a wall 8 into two communicating compartments, the said wall not reaching the bottom of the vessel. The influx of the water takes place in one of the compartments, and the float 4 is fitted in the other,

. the quiet comipartment, so as not to be affected by the surge or splash of the water caused through the influx of the water. According to the indicator 6 the influx of the pulp upon the Wire-cloth is controlled by hand. The regulation just mentioned may, however, be effected automatically by means of any suitable device performing the finer regulation. The coarser regulation on starting, etc., is done by hand. A suitable automatic regulating device consists of an electric contact, such as the indicator 6 movable over and between electric contacts 20 and 21 which latter may be either fixed or movable, and this the first mentioned contact is actuated by the variations in the amount of water running off from, or pressed out of,

- said circuit.

some part of the wet-portion of the machine, or through the action of the aforesaid float, vessel, scales, etc., as. the case may be. 'The indicator 6 controls the current in one or more electric circuits operating suitable means, such as a motor, for operating the device for letting the ulp into the machine. According to the orm of construction shown, 9 .is a reciprocating rail running, in suitable guides, which rai may alsobe replaced .by some other reciprocating member. This rail 9 has two oppositely operating latches 10, 11, which cooperate each with its electro-magnet 12 and 13 respectively and with a common cog-wheel 14 for operating the devices for letting the pulp-into the machine, which electro-magnets 12, 13 are excited by closing their circuits by means of the previously mentioned, movable, elec tric contact member 6, so that first one and then the other latch is attracted by its electro-magnet and thus comes into such a position that during the movement of the reciprocating member, or the rail 9, it turns the cog-wheel-14 in the direction determined for the respective latch.; In the form of construction shown, the rail or bar 9 is made to slowly reciprocate through an adjoining axle by means of a belt 15, pulley 16, screw 17, worm-gear 18 and crank 19. The stroke may for example be 25 mm., dependent upon the spacing of the teeth in the cog-wheel 14. The movable contact or indicator 6 oscillates between the two con- .tacts 20, 21, which may be fixed or adjustable by hand or automatically. A circuit is formed by the wire 22 with the battery 23, the support 24, the indicator 6, the contact 20, the wire 25 and the electro-magnet 12. If the pulp in the "machine is getting thinner, less water runs from or is pressed out of the wet portion such as the pulp web, and consequently less water gets, into the vessel 2, the level of the liquid in the latter sinks and thus also the float, which results in the indicator 6 coming into contact with the contact 20 and closing the The, electro-magnet 12 then attracts its armature, which is the latch 10, which then occupies such a position that, when the rail 9 moves to the right, it engages the cog-wheel 14 and revolves the latter in the determined direction for turning on more pulp, but on the rail moving to the left merely glides over the teeth Without revolving the cog-wheel. This goesv on until the requisite thickness of the pulp has been reached, when the indicator 6 leaves the contact 20. Another circuit is formed by the wire 22 with the battery 23, the support 24, the indicator 6, the contact 21, the wire 26 and the electro-magnet 13. When the volume of water runs from or is pressed out of the wet portion or pulp web atthe wet latch 10, until the .proper thickness, I vessel and adapted pulp is getting too thick, a greater the indicator 6 to engage the contact 21 whereby the last-named circuit is closed in the same way andthe latch 11' revolves the cog-wheel 14 in the opposite direction to the thickness of the pulp has again become normal.- When no current is passing through the electro-magnets 12, 13

the latches 10, 11 occupy the position shown in the drawing, so that the rail 9 may reciprocate without acting upon the cog-wheel 14. he separate parts of the invention here referred to may vary as regards, material, shape, size, number and combination and may be transposed, provided the characteristics'of the invention be retained.

1'. In the-manufacture'of paper, or like material by machinery, a method for regulating the feed of ulp to the machine and indicating the thic ess of pulp therein, by storing part of the fluid running from the pulp in the machine and then allowing the variations in the level of said stored fluid to indicate the thickness of the pulp in the machine and to control the supply of pulp to the machine.

2. In the manufacture of paper, or like material by machinery, a method of regulating the feed of pulp to the machine and indicating the thickness of pulp in the maa quantity'of the liquid chine, by storing pulp in the machine, and

running from the .then allowing the varying quantities of -ply of pulp to themachine.

3. In the manufacture of paper, or like material, by machinery, a method of regulating the feed of pulp to the machine and indicating the thickness of pulp in the machine, by partially storing fluid being pressed out of the pulp and flowing from the machine; then permitting the variations in quantity of the stored fluid, produced by the varying thicknesses of the pulp in the machine, to operate a registering device for indicating the thickness of pulp in the machine, and a regulating device for controlling the supply of pul to the machine.

apparatus 0 the character described, and adapted for use with a paper machine, comprising -a vessel to receive liquid pressed from the material in said machine and adapted to discharge a volume of liquid equal to the normal volume received from sa1d material when the same is of to rise and fall according to the variations of. level of said fluid in the vessel, produced by the varying thicknesses of the material in the machine, and

a float disposed in saidv cating the thickness of ratus of the character indicating means connected with said float for indicating the thickness of the material in said machine.

5. An apparatus of the character described, a paper making machine, com; prising a vessel to receive liquid pressed from the material in said machine and adapted to discharge a volume of liquid equal to the normal volume received from said material when the same is of proper thickness, a float disposed in said vessel and adapted to rise and fall according to the variations of level of said fluid in the vessel, produced by the varying thicknesses of the material in the machine, and means controlled by said float whereby the feed of the material to the machine is controlled according to the variations in thickness of the material in the machine.

6. An indicating and controlling apparatus for use in a paper making machine,

comprising a vessel to receive liquid pressed from the material in said machine and adapted to discharge a volume of liquid equal to the normal volume received from said material when the same is of proper thickness, a float disposed in said vessel and adapted to rise and fall according to the variations of level of said fluid in the vessel, produced by the varying thicknesses of the material in the machine, and indicating means connected: with said float for indithe material in said machine, and means controlled by said indicating means whereby the feed of material to the machine is controlled according to the variation in thickness of the material in the machine.

7. An indicating and controlling apparatusifor use in connection with a paper mach'ne, comprising a vessel to receive liqui pressed from the material in said machine and adapted to discharge'a volume of liquid equal to the normal volume received from said material when'the same is of proper thickness, means associated with the vessel and actuated by the varying quantities of liquid in the vessel, produced by the varying thickness of material in the ma chine, indicating means connected with said first mentioned means for indicating the thickness of the material in the machine.

8. An indicating and controlling appadescribed, for use with the wet portion of a machine, comprising a vessel to receive liquid pressed from the material in said machine and adapted to discharge a volume of liquid equal to the normal volume of liquid received from said material when the same is of proper thickness, means associated with ,the vessel and actuated by the varying quantities of liquid in the vessel, produced by the varying thickness of material in the machine, and means controlled by said indicating means whereby the feed of material to the machine is controlled according to the variation in thickness of the material in the machine.

9. An indicating and controlling apparatus of the character described, with the Wet press of a paper making machine, comprising a vessel to receive liquid pressed from the material in said machine and adapted to discharge a volume of liquid equal to the normal volume received from said .material when the same is of proper thickness, a float disposed in said vessel and adapted to rise and fall according to the variations of level of said fluid in the vessel, produced by the varying thicknesses of the material in the machine, and indicating means connected with said float for indicating the thickness of the material in the machine, electric contact members adjust- ,ably disposed in the path of said indicating means to be engaged thereby, and means for controlling the feed of material to the machine, electric circuits between said indicating means, controlling means and contacts controlled by the engagement of said indicating means with said contacts, whereby the feed of'material to the machine is varied according to the thickness of the material in the machine, and a source of electrical energy for said circuits.

10. An indicating and controlling apparatus adapted to coiiperate with the press of a paper making machine, comprising a measuring device for indicating the amount of material in said machine, electric circuits connected with the said measuring device, a source of electrical energy for said circuits, a reciprocating member, spaced and oppositely disposed pawls carried by said memher, a toothed wheel controlling the feed of material and adapted to be engaged by said pawls and to receive motion therefrom, an

electromagnet for each of said pawls and disposed in said electric circuits, saidmagnets being adapted to be energized and to operate said pawls alternately according to the operation of said measuring device, whereby the operation of said toothed wheel 

